The ibm.com server looks up the NAPTR record for example.com and forwards the INVITE message to that example.com server.

服务器将查找 example.com 的 NAPTR 记录，并将 INVITE 消息转发给 example.com 服务器。

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Following the above discussion, the paper discusses label registration, label tracking and label logout. The NAPTR realization is also included.

文章紧跟着讨论了标签注册、跟踪和注销问题以及实现这些问题的NAPTR的方法。

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